I’m a bit late in posting this, and in the meantime Campana has been traded after initially being designated for assignment. I’m not sure that I agree 100% with cutting Campana loose, but GM Jed Hoyer stated that the organization was reluctant to pare a pitcher from the 40-man roster. Once that decision is made, cutting Campana was a near-inevitable outcome. He’s really good at stealing bases, but isn’t very good at anything else, which makes him one of the game’s premier pinch-runners. That’s not a very valuable guy to have, especially an NL team that has a ways to go to rebuild their roster before being contenders. But still, at least he has a very real skill with very real value, which is more than I suspect can be said for a couple of the pitchers that remain on the roster.
With that said, however, the Cubs sure got good value for him from the Diamondbacks. Castillo and Leal are both only 17, although Leal will be 18 before the season starts. Judging only by their numbers in the Dominican Summer League, I’d say that Leal is the more interesting prospect, but of course at their ages it hardly pays to apply that label in the first place. The point is, this is how a team stockpiles talent, by flipping a marginal player like Campana into a couple of lottery tickets.